Heaven Benchmark is benchmarking software based on the UNIGINE Engine. The benchmark was developed and published by UNIGINE Company in 2009. The main purpose of software is performance and stability testing for GPUs. Users can choose a workload preset, Basic or Extreme, or set the parameters by custom. The benchmark 3D scene is a steampunk-style city on flying islands in the middle of the clouds. The scene is GPU-intensive because of tessellation used for all the surfaces, dynamic sky with volumetric clouds and day-night cycle, real-time global illumination, and screen-space ambient occlusion.